Document And Entity Information
Note To Financial Statement Details Textual
Statistical Measurement [Axis]
Significant Accounting Policies
Note 2 - Acquisitions and Divestitures
Income tax expense
Income tax expense
ecd_NonRule10b51ArrTrmntdFlag
Non-Rule 10b5-1 Arrangement Terminated [Flag]
Note 3 - Debt Securities
ecd_NonRule10b51ArrAdoptedFlag
Non-Rule 10b5-1 Arrangement Adopted [Flag]
Note 4 - Loans
Financial Service, Other [Member]
Trading Arrangements, by Individual [Table]
Note 5 - Credit Quality
Material Terms of Trading Arrangement [Text Block]
Note 6 - Allowance for Credit Losses
Deposit Account [Member]
Note 7 - Deposits
Note 8 - Borrowings
Financial Instrument [Axis]
Investment in Debt and Equity Securities and Other Trading Assets [Text Block]
Note 9 - Derivative Instruments and Hedging Activities
Note 10 - Employee Benefit Plans
Note 11 - Earnings Per Share
us-gaap_AvailableForSaleDebtSecuritiesAccumulatedGrossUnrealizedLossBeforeTax
Securities available for sale, unrealized losses
Minimum [Member]
Note 12 - Accumulated Other Comprehensive Income (Loss)
Securities available for sale, unrealized gains
Note 13 - Fair Value
Statistical Measurement [Domain]
Note 14 - Litigation, Commitments, and Contingencies
Maximum [Member]
Note 2 - Acquisitions and Divestitures - Schedule of Business Acquisition (Details)
Note 3 - Debt Securities - Securities Available-for-sale (Details)
us-gaap_BusinessAcquisitionSharePrice
Purchase price per share of the Company's common stock (in dollars per share)
Note 3 - Debt Securities - Securities by Contractual Maturity (Details)
Note 3 - Debt Securities - Available For Sale Securities in Continuous Unrealized Loss Position (Details)
Note 3 - Debt Securities - Schedule of Realized Gain (Loss) (Details)
Note 4 - Loans - Loans by Class (Details)
Note 5 - Credit Quality - Loans by Credit Quality (Details)
Note 5 - Credit Quality - Nonaccrual Loans by Loan Class (Details)
Note 5 - Credit Quality - Aging of Past Due Loans by Loan Class (Details)
Note 5 - Credit Quality - Loans Modified as Troubled Debt Restructurings (Details)
Note 5 - Credit Quality - Other Real Estate Owned (Details)
us-gaap_DefinedBenefitPlanAmortizationOfGainsLosses
Amortization of losses
Amortization of prior service cost
Note 6 - Allowance for Credit Losses - Changes in Allowance for Loan Losses (Details)
Basis of Presentation and Significant Accounting Policies [Text Block]
Note 7 - Deposits - Components of Deposits (Details)
Note 8 - Borrowings - Components of Borrowings (Details)
Note 9 - Derivative Instruments and Hedging Activities - Notional or Contractual Amounts and Fair Values of Derivative Financial Instruments (Details)
Note 9 - Derivative Instruments and Hedging Activities - Effect of Derivative and Hedging Activity, on Consolidated Statements of Income (Details)
Note 10 - Employee Benefit Plans - Components of Net Periodic Pension Cost and Assumed Discount Rate (Details)
Note 11 - Earnings Per Share - Basic and Diluted Earnings Per Common Share (Details)
Note 12 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income, Net of Tax (Details)
Note 12 - Accumulated Other Comprehensive Income (Loss) - Reclassifications Out of Accumulated Other Comprehensive Income (Loss) (Details)
Note 13 - Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details)
Note 13 - Fair Value - Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) (Parentheticals)
Note 13 - Fair Value - Assets Measured at Fair Value on Nonrecurring Basis (Details)
Note 13 - Fair Value - Quantitative Information for Assets Measured at Fair Value on Nonrecurring Basis (Details)
Debt Securities, Available-for-Sale [Table]
Note 13 - Fair Value - Financial Instruments (Details)
Note 14 - Litigation, Commitments, and Contingencies - Off-balance Sheet Financial Instruments (Details)
Notes To Financial Statements
Notes To Financial Statements [Abstract]
Salaries and employee benefits
us-gaap_DividendsCommonStockCash
Common dividends declared
Interest cost
Financial Instruments [Domain]
Common dividends declared, per share (in dollars per share)
Asset Pledged as Collateral [Member]
Weighted Average [Member]
us-gaap_IncreaseDecreaseInAccruedInterestReceivableNet
(Increase) decrease in accrued interest receivable
Net periodic cost
Construction, Development and Other Land [Member]
Information pertaining to construction, development and other land loans.
Single Family Non-owner Occupied [Member]
Information pertaining to single family non-owner occupied loans.
us-gaap_SharesOutstanding
Balance (in shares)
Balance (in shares)
Non-farm, Non-residential [Member]
Information pertaining to non-farm, non-residential loans.
Commercial and Industrial [Member]
Information pertaining to commercial and industrial loans.
Multi-family Residential [Member]
Information pertaining to multi-family residential loans.
Farmland [Member]
Information pertaining to farmland loans.
Consumer Real Estate Portfolio Segment [Member]
Portfolio segment of the company's total financing receivables related to consumer real estate receivables.
Issuance of common stock to 401(k) plan (in shares)
Agricultural [Member]
Information pertaining to agricultural loans.
Issuance of common stock to 401(k) plan
Dividends [Axis]
Segment Reporting [Text Block]
Dividends [Domain]
Home Equity Lines [Member]
Information pertaining to home equity lines.
Securities available for sale, 12 months or longer, fair value
Single Family Owner Occupied [Member]
Information pertaining to single family owner occupied loans.
Owner Occupied Construction [Member]
Information pertaining to owner occupied construction.
Securities available for sale, less than 12 months, fair value
Adjustments to reconcile net income to net cash provided by operating activities
Other Loan [Member]
Information pertaining to other loans.
Preferred stock, undesignated par value; 1,000,000 shares authorized; Series A Noncumulative Convertible Preferred Stock, $0.01 par value; 25,000 shares authorized; none outstanding
us-gaap_Liabilities
Total liabilities
Consumer and Other Portfolio Segment [Member]
Portfolio segment of the company's total financing receivables related to consumer and other receivables.
Defined Benefit Plan [Table]
Liabilities
Consumer Loans [Member]
Information pertaining to consumer loans.
Service fees
The amount of service fees during the period.
us-gaap_LiabilitiesAndStockholdersEquity
Total liabilities and stockholders' equity
Pledged Status [Domain]
Segment Reporting [Table]
Pledged Status [Axis]
Unlikely to be Collected Financing Receivable [Member]
us-gaap_ShareBasedCompensation
Equity-based compensation expense
(Decrease) increase in other comprehensive income (loss), net of taxes
Represents the increase (decrease) in accumulated other comprehensive income in noncash investing or financing activities.
Preferred stock, outstanding (in shares)
Preferred stock, authorized (in shares)
Portion at Fair Value Measurement [Member]
Reported Value Measurement [Member]
Preferred stock, par value (in dollars per share)
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect
Net increase in cash and cash equivalents
Standby letters of credit and financial guarantees (1)
Furniture and equipment expense
Cash and cash equivalents
us-gaap_CashAndCashEquivalentsFairValueDisclosure
Estimate of Fair Value Measurement [Member]
Retail Repurchase Agreements [Member]
Information pertaining to retail repurchase agreements.
New Accounting Pronouncements, Policy [Policy Text Block]
Schedule of Fair Value, off-Balance-Sheet Risks [Table Text Block]
us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
Cash and cash equivalents at beginning of period
Cash and cash equivalents at end of period
US Government Agencies Debt Securities [Member]
Antidilutive Securities, Name [Domain]
Statement [Table]
Reclassification, Comparability Adjustment [Policy Text Block]
S 2025 Q1 Dividends [Member]
Represents special Q1 2025 dividends.
Total loans held for investment, net of unearned income
Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Includes loans and leases covered under loss sharing agreements.
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionAccumulatedLoss
Securities available for sale, total unrealized losses
Fair value loans
us-gaap_LoansReceivableFairValueDisclosure
Loans held for investment, net of allowance
Securities available for sale, total fair value
Equity securities
us-gaap_EquitySecuritiesFvNi
Accounting Standards Update 2025-08 [Member]
Derivative liabilities
us-gaap_DebtSecuritiesAvailableForSaleUnrealizedLossPositionNumberOfPositions
Debt Securities, Available-for-Sale, Unrealized Loss Position, Number of Positions
Financing Receivable, Allowance for Credit Loss [Table Text Block]
Financing Receivable, Past Due [Table Text Block]
us-gaap_SecuritiesLoanedOrSoldUnderAgreementsToRepurchaseFairValueDisclosure
Securities sold under agreements to repurchase
Financing Receivable Credit Quality Indicators [Table Text Block]
Financing Receivable, Modified [Table Text Block]
Product and Service [Domain]
Product and Service [Axis]
us-gaap_FederalHomeLoanBankAdvancesGeneralDebtObligationsDisclosuresCollateralPledged1
Federal Home Loan Bank, Advances, General Debt Obligations, Disclosures, Collateral Pledged
Deferred compensation liabilities
Deferred compensation liabilities
Fair value portion of deferred compensation liabilities.
Deferred compensation assets
Deferred compensation assets
Fair value portion of deferred compensation assets.
FDIC premiums and assessments
Amount of expense for Federal Deposit Insurance Corporation (FDIC) insurance and assessments.
Non-covered Loans [Member]
Information pertaining to non-covered loans.
Asset Class [Axis]
Employee benefit plans:
OREO [Member]
Information pertaining to other real estate owned (OREO).
Gain (Loss) on Securities [Table Text Block]
Assets [Abstract]
Measurement Frequency [Axis]
Commitments and Contingencies Disclosure [Text Block]
Statement [Line Items]
fcbc_ReserveForUnfundedCreditCommitments
Reserve for Unfunded Credit Commitments
Represents the amount of reserve for unfunded credit commitments.
Fair Value Hierarchy and NAV [Axis]
Common stock, issued (in shares)
Common stock, outstanding (in shares)
Common stock, authorized (in shares)
Term Extension and Rate Reduction [Member]
Represents Term Extension and Rate Reduction.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis [Table Text Block]
Non-covered loans, percent
Schedule of Realized Gain (Loss) [Table Text Block]
Common stock, $1 par value; 50,000,000 shares authorized; 28,735,063 shares issued and 18,902,628 outstanding at June 30, 2026; 27,662,570 shares issued and 18,334,787 outstanding at December 31, 2025
Interest payable
Residential real estate loans in the foreclosure process (1)
Short-Term Debt, Type [Domain]
fcbc_FinancingReceivableCreditLossExpenseReversalBeforeLoanCommitmentsRecovery
Provision for (recovery of) credit losses - loans
Amount of credit loss expense (reversal of expense) for financing receivable before loan commitments recovery.
us-gaap_PolicyTextBlockAbstract
Accounting Policies
us-gaap_DisclosureTextBlockAbstract
Notes to Financial Statements
us-gaap_TableTextBlock
Notes Tables
Comprehensive Income (Loss) Note [Text Block]
Federal funds sold
Short-Term Debt, Type [Axis]
us-gaap_ComprehensiveIncomeNetOfTax
Total comprehensive income
fcbc_OREONoncoveredMeasurementInput
OREO
The measurement input for non-covered other real estate owned.
us-gaap_FinancingReceivableUnamortizedLoanFeeCost
Financing Receivable, Unamortized Loan Cost (Fee)
Fair Value Measurement and Measurement Inputs, Recurring and Nonrecurring [Text Block]
Proceeds from maturities, prepayments, and calls of securities available-for-sale
O 2025 H1 Dividends [Member]
Relating to ordinary semiannual dividends.
us-gaap_FinancingReceivableUnamortizedPurchasePremiumDiscount
Financing Receivable, Unamortized Purchase Premium (Discount)
Deposits fair value
Proceeds from the sale of equity investment
Proceeds from sale of premises and equipment
fcbc_CashProvidedByUsedInDivesturesAndAcquisitionsNet
Cash provided by (used in) divestitures and acquisitions, net
The cash provided by or used in divestures and acquisitions, net.
Other comprehensive income (loss), before tax
us-gaap_OtherComprehensiveIncomeAvailableforsaleSecuritiesAdjustmentBeforeTaxPortionAttributableToParent
Net unrealized (loss) gain on available-for-sale debt securities
us-gaap_LongTermDebt
Long-Term Debt
us-gaap_OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent
Other comprehensive income, before tax
Payment Deferral [Member]
Intangible Asset, Finite-Lived, Class [Axis]
Statement of Stockholders' Equity [Abstract]
Proceeds from sale of other real estate owned
Extended Maturity [Member]
Statement of Comprehensive Income [Abstract]
Loan Restructuring Modification [Axis]
Intangible Asset, Finite-Lived, Class [Domain]
Equity securities
Loan Restructuring Modification [Domain]
Statement of Cash Flows [Abstract]
Contractual Interest Rate Reduction [Member]
Other Real Estate Owned [Table Text Block]
Tabular disclosure of other real estate owned.
Financing Receivable Portfolio Segment [Axis]
Hometown Bancshares, Inc. [Member]
Represents information pertaining to the Hometown Bancshares, Inc.
OREO secured by residential real estate
Represents the amount of non-covered other real estate owned secured by residential real estate.
Other comprehensive loss
us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent
Other comprehensive (loss) gain, net of tax
Stockholders' equity
Core Deposits [Member]
Equity Components [Axis]
Financing Receivable Portfolio Segment [Domain]
Proceeds from stock options exercised
Equity Component [Domain]
Fair Value Measurements, Nonrecurring [Table Text Block]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet
Net assets acquired over liabilities assumed
Fair Value, Inputs, Level 2 [Member]
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansGross
Fair Value Adjustment of Acquired Loan Portfolio
The gross loans recognized as identifiable assets acquired and liabilities assumed for business combinations.
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]
Fair Value, Inputs, Level 3 [Member]
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member]
Fair Value, Inputs, Level 1 [Member]
AOCI Attributable to Parent [Member]
Additional Paid-in Capital [Member]
Corporate Debt Securities [Member]
Retained Earnings [Member]
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLoansDeferredLoanFees
Allowance for Credit Loss and Deferred Loan Fees Excluded from Acquired Loan Portfolio
Represents deferred loan fees on loans recognized identifiable assets acquired and liabilities assumed for business combinations.
Schedule of Gain (Loss) on Securities [Table]
Premises and equipment, net
Financial Asset, Aging [Axis]
Compensation and Employee Benefit Plans [Text Block]
Interest Deferral [Member]
Represents information pertaining to interest deferral.
Financing Receivable, Nonaccrual [Table Text Block]
Total loan
Financial Asset, Aging [Domain]
Provision (recovery) for credit losses
Financial Asset, 30 to 59 Days Past Due [Member]
Schedule of Net Benefit Costs [Table Text Block]
Securities available for sale, amortized cost
Total debt securities available-for-sale, amortized cost
us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Allowance for credit losses
Balance, Loans
Allowance for credit losses - loans
Financial Asset, 60 to 89 Days Past Due [Member]
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostAllowanceForCreditLossExcludingAccruedInterest
Debt Securities, Available-for-Sale, Allowance for Credit Loss, Excluding Accrued Interest
Originated in four years prior
Prior
Originated in two years prior
Originated in three years prior
Originated in current year
Fair Value, by Balance Sheet Grouping [Table Text Block]
Originated in one year prior
Share-Based Payment Arrangement, Option [Member]
Supplemental disclosure -- cash flow information
fcbc_FinancingReceivableModifiedNumberOfLoansUncollectible
Financing Receivable, Modified, Number of Loans Uncollectible
Number of modified loans that are uncollectible.
Revolving
Commitments to extend credit
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAvailableforsaleSecurities
Securities available for sale
The recognized identifiable assets acquired and liabilities assumed in the form of available-for-sale securities from business combinations.
Purchased Seasoned Loan [Member]
Represents information pertaining to the purchased seasoned loan.
us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Accretion of discounts on investments
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedStocksWithOtherBanks
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Stocks With Other Banks
Represents the stocks with other banks recognized in identifiable assets acquired and liabilities assumed in a business combination.
Allowance recorded on acquired loans - Hometown
The amount of allowance for credit losses on financing receivable loans acquired through business combinations, excluding accrued interest.
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLongtermDebt
Long term debt
The long term debt recognized in identifiable assets acquired and liabilities assumed for business combinations.
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedSecuritiesSoldUnderRepoRetail
Securities Sold Under Repo-Retail
The securities sold under repo-retail recognized as identifiable assets acquired and liabilities assumed for a business combination.
Delayed period (Month)
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalentsLoansNet
Loans held for investment, net of allowance and mark
The cash and equivalent loans recognized identifiable assets acquired and liabilities assumed in a business combination.
Allowance for Credit Losses [Text Block]
Derivative Instruments and Hedging Activities Disclosures [Table]
Other Commitments [Table]
us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Net (gain) loss on sale of premises and equipment
Loans With No Allowance [Member]
Represents information regarding loans with no allowance.
Total provision for (recovery of) credit losses - loans and loan commitments
fcbc_FinancingReceivableCreditLossExpenseReversalLoansAndLoanCommitments
Amount of credit loss expense (reversal of expense) for financing receivable and loan commitments.
Loans With an Allowance [Member]
Represents information pertaining to loans with an allowance.
fcbc_FinancingReceivableAllowanceForCreditLossLoansAndLoanCommitments
Total allowance for credit losses beginning of quarter
Ending balance
Amount of allowance for credit loss on financing receivable and loan commitments.
Accumulated other comprehensive loss
Recorded by Hometown [Member]
Represents loan fees recorded by Hometown.
Financial Asset, 30 to 89 Days Past Due [Member]
Financial asset more than 29 days past due but fewer than 90 days past due.
us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income before income taxes
Income before income taxes
Bank Time Deposits [Member]
Additional paid-in capital
Debt Disclosure [Text Block]
fcbc_CollateralDependentLoans
Collateral Dependent Loans
Represents the amount of collateral dependent loans as of the specified date.
Use of Estimates, Policy [Policy Text Block]
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
us-gaap_PaymentsToAcquireProductiveAssets
Payments to acquire premises and equipment
fcbc_BusinessCombinationStockConversionRatio
Business Combination, Stock Conversion Ratio
The stock conversion ratio for a business combination.
Collateralized Mortgage-Backed Securities [Member]
Debt Securities, Available-for-Sale, Unrealized Loss Position, Fair Value [Table]
us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
Repurchase of common shares
us-gaap_NoninterestExpense
Total noninterest expense
Noninterest expense
Hometown Acquisition
Fair Value Adjustments [Member]
Represents the fair value adjustments.
Retail repurchase agreements
us-gaap_DebtWeightedAverageInterestRate
Common stock options exercised
Schedule of Debt [Table Text Block]
Financial Asset, Not Past Due [Member]
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedReserveForUnfundedCommitments
Reserve for Unfunded Commitments, Fair Value Adjustment
The reserve for unfunded commitments recognized in identifiable assets acquired and liabilities assumed in a business combination.
us-gaap_OffBalanceSheetCreditLossLiability
Balance, Allowance for credit losses - loan commitments
Balance, Allowance for credit losses - loan commitments
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedInterestBearingDeposits
Interest-bearing
Amount of interest-bearing deposits assumed at the acquisition date.
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoninterestBearingDeposits
Noninterest bearing
Amount of noninterest-bearing deposits assumed at the acquisition date.
Fair Value Measurement Inputs and Valuation Techniques [Table Text Block]
Hometown Acquisition (in shares)
us-gaap_ReclassificationFromAociCurrentPeriodNetOfTaxAttributableToParent
Reclassified from AOCI
Common stock options exercised (in shares)
Fair Value Measurement Inputs and Valuation Techniques [Table]
Other comprehensive income before reclassifications
Class of Stock [Domain]
Amortized Cost of > 90 Days Accruing No Allowance, Total
Represents the amortized cost of covered and non-covered financing receivables greater than 90 days past due, accruing no allowance.
us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Repurchase of common shares (in shares)
Amortized Cost of > 90 Days Accruing No Allowance, Non-covered
Represents the amortized cost of non-covered financing receivables greater than 90 days past due, accruing no allowance.
Schedule of Long-Term Debt Instruments [Table]
us-gaap_GainLossOnSaleOfOtherAssets
Net loss on sale of other real estate owned
us-gaap_DebtInstrumentUnusedBorrowingCapacityAmount
Debt Instrument, Unused Borrowing Capacity, Amount
Operating activities
Investing activities
OREO
us-gaap_NetCashProvidedByUsedInOperatingActivities
Net cash provided by operating activities
Financing activities
us-gaap_NetCashProvidedByUsedInInvestingActivities
Net cash provided by investing activities
us-gaap_NetCashProvidedByUsedInFinancingActivities
Net cash used in financing activities
Loans held for investment, net of unearned income
Amount, before allowance for credit loss, of financing receivable covered under loss sharing agreement and financing receivable not covered under loss sharing agreement.
us-gaap_PaymentsToAcquireAvailableForSaleSecuritiesDebt
Payments to acquire securities available-for-sale
Proceeds from sale of securities available-for-sale
Total Fair Value
Loans, Notes, Trade and Other Receivables Disclosure [Text Block]
Decrease in interest-bearing deposits, net
Accounting Policies [Abstract]
US Treasury Securities [Member]
US States and Political Subdivisions Debt Securities [Member]
Increase (decrease) in noninterest-bearing deposits, net
us-gaap_PaymentsForProceedsFromLoansAndLeases
Net decrease in loans
Measurement Input Type [Axis]
Income Statement [Abstract]
us-gaap_DebtSecuritiesAvailableForSaleAmortizedCostExcludingAccruedInterestAfterAllowanceForCreditLoss
Debt Securities, Available-for-Sale, Amortized Cost, Excluding Accrued Interest, after Allowance for Credit Loss
Provision for (recovery of) credit losses - loan commitments
Provision for credit losses - loan commitments
us-gaap_FinancingReceivableAllowanceForCreditLossPurchasedWithCreditDeteriorationIncrease
Financing Receivable, Allowance for Credit Loss, Purchased with Credit Deterioration
Debt securities available-for-sale, at fair value
Securities available for sale, fair value
Total debt securities available-for-sale, fair value
us-gaap_NumberOfReportableSegments
Number of Reportable Segments
Schedule of Available-for-Sale Securities Reconciliation [Table Text Block]
Measurement Input, Discount Rate [Member]
Net income
Net income
Net income
Financial Asset, Past Due [Member]
Amortization of intangible assets
Amortization of intangibles
Measurement Input Type [Domain]
Accounting Standards Update [Domain]
us-gaap_InterestIncomeExpenseNet
Net interest income
fcbc_PolicyTable
Accumulated Other Comprehensive Income (Loss) [Table]
Accounting Standards Update and Change in Accounting Principle [Table]
us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtPurchasePrice
Financing Receivable, Purchased with Credit Deterioration, Amount at Purchase Price
Liabilities assumed
Assets acquired (excluding cash and cash equivalents)
Occupancy expense
us-gaap_OtherNoninterestExpense
Other operating expense
us-gaap_FinancingReceivablePurchasedWithCreditDeteriorationAmountAtParValue
Financing Receivable, Purchased with Credit Deterioration, Amount at Par Value
Net actuarial (loss) gain
us-gaap_NoninterestIncome
Total noninterest income
Noninterest income
Measurement Basis [Axis]
Common Stock Outstanding [Member]
Outstanding stock that is subordinate to all other stock of the issuer.
Other operating income
Fair Value Hierarchy and NAV [Domain]
Transfer of loans to other real estate owned
Measurement Frequency [Domain]
Statement of Financial Position [Abstract]
Restricted Stock and Units [Member]
Represents restricted stock and units.
Deposit Liability [Table]
Cash paid for income taxes
Advertising and public relations
Recoveries
Other assets
Other Assets
Financing Receivable, Allowance for Credit Loss, Writeoff
Charge-offs
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxAssets
Business Combination, Recognized Asset Acquired, Deferred Tax Asset
Depreciation and amortization of premises and equipment
Professional fees
Fair Value, Nonrecurring [Member]
fcbc_GoodwillCarriedAsAsset
Goodwill
The value of goodwill carried as asset.
Fair Value, Recurring [Member]
us-gaap_FinancingReceivableExcludingAccruedInterestAllowanceForCreditLossWriteoffAfterRecovery
Net charge-offs
Other operating expense
us-gaap_PaymentsForProceedsFromLifeInsurancePolicies
Proceeds from bank owned life insurance
us-gaap_PaymentsForRepurchaseOfCommonStock
Payments for repurchase of common stock
us-gaap_IncreaseDecreaseInOtherOperatingAssets
(Increase) decrease in other assets
Document Type
Document Information [Line Items]
Document Quarterly Report
Document Information [Table]
Antidilutive potential common shares (in shares)
Antidilutive Securities [Axis]
Total dilutive effect of potential common shares (in shares)
Entity Interactive Data Current
us-gaap_BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued
Business Combination, Consideration Transferred, Equity Interest, Share Issued, Number of Shares (in shares)
Document Transition Report
us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Diluted (in shares)
Weighted average common shares outstanding, diluted (in shares)
us-gaap_BankOverdrafts
Bank Overdrafts
Earnings per common share
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDateAmortizedCostBasis
Securities available for sale, single maturity date, amortized cost
us-gaap_AvailableForSaleSecuritiesDebtMaturitiesSingleMaturityDate
Securities available for sale, single maturity date, fair value
Dilutive effect of potential common shares (in shares)
Weighted average common shares outstanding, basic (in shares)
Basic (in shares)
Derivative Instrument [Axis]
Antidilutive Security, Excluded EPS Calculation [Table]
Basic (in dollars per share)
Basic earnings per common share (in dollars per share)
us-gaap_DepositLiabilitiesCollateralIssuedFinancialInstruments
Deposit Liabilities, Collateral Issued, Financial Instruments
Total nonaccrual loans
Increase in securities sold under agreements to repurchase, net
The cash flow from investments sold under the agreement to repurchase such investment.
Interest-bearing
Total interest-bearing deposits
us-gaap_Deposits
Total deposits
Deposits
Deposit Liabilities Disclosures [Text Block]
Other intangible assets
Noninterest-bearing demand deposits
Noninterest bearing
Equity-based compensation expense (in shares)
Document Fiscal Period Focus
Equity-based compensation expense
Document Fiscal Year Focus
Amendment Flag
Financing Receivables [Text Block]
Goodwill
Goodwill
Gross realized gains
Increase (decrease) in other liabilities
us-gaap_PaymentsToAcquireFederalHomeLoanBankStock
Purchase of FHLB stock
Proceeds from the redemption of FHLB stock
Document Period End Date
Interest income:
Legal Entity [Axis]
us-gaap_InterestAndDividendIncomeOperating
Total interest income
Financing Receivable, Allowance for Credit Loss [Table]
Gain on sale of securities
Net gain on sale of securities
Gain recognized
Commercial Portfolio Segment [Member]
Business Combination [Domain]
Entity File Number
Entity Tax Identification Number
Supplemental transactions -- noncash items
Business Combination [Axis]
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPositionLessThan12MonthsAccumulatedLoss
Securities available for sale, less than 12 months, unrealized losses
us-gaap_DebtSecuritiesAvailableForSaleContinuousUnrealizedLossPosition12MonthsOrLongerAccumulatedLoss
Securities available for sale, 12 months or longer, unrealized losses
Entity [Domain]
Entity Central Index Key
Entity Registrant Name
Doubtful [Member]
Individual retirement accounts
Entity Current Reporting Status
Business Combination [Table]
Interest rate swaps
us-gaap_DebtSecuritiesAvailableForSaleRealizedLoss
Gross realized losses
Special Mention [Member]
Money market accounts
us-gaap_DebtSecuritiesAvailableForSaleRealizedGainLoss
Net gain on sale of securities
Substandard [Member]
Entity Incorporation, State or Country Code
Interest-bearing demand deposits
us-gaap_OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax
Net employee benefit plans adjustment
Pass [Member]
Current Fiscal Year End Date
Certificates of deposit
Collateral Dependent Assets With Specific Reserves [Member]
Represents collateral dependent assets with specific reserves.
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCashAndEquivalents
Cash and cash equivalents
us-gaap_OtherComprehensiveIncomeLossTaxPortionAttributableToParent1
Income tax (benefit) expense
Collateral dependent assets with specific reserves
The measurement input for collateral dependent assets with specific reserves.
Entity Filer Category
Entity Shell Company
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
Total liabilities
Entity Emerging Growth Company
Derivative Asset, Statement of Financial Position [Extensible Enumeration]
Notional or contractual amount
Entity Small Business
Savings deposits
us-gaap_BusinessCombinationAcquiredReceivablesGrossContractualAmount
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Gross Contractual Amount
Valuation Approach and Technique [Axis]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
Intangible assets
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
Net identifiable assets acquired over (under) liabilities assumed
us-gaap_BusinessCombinationAcquiredReceivablesFairValue
Business Combination, Acquired Receivable, Purchased without Credit Deterioration, Fair Value
Hedging Designation [Domain]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
Other assets
Derivative assets
Derivative financial assets
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
Premises and equipment
Interest expense
Interest-bearing deposits in banks
Derivative Instruments and Hedging Activities Disclosure [Text Block]
Valuation Approach and Technique [Domain]
Valuation, Market Approach [Member]
Interest on deposits
us-gaap_BusinessCombinationConsiderationTransferred1
Fair Value of total consideration transferred
Entity Address, State or Province
Entity Address, City or Town
Marketable Securities [Table]
Retained earnings
us-gaap_InterestExpenseOperating
Total interest expense
Entity Address, Address Line One
City Area Code
us-gaap_FinancingReceivableCoveredAndNotCoveredAfterAllowanceForCreditLossFeePremiumAndDiscount
Loans held for investment, net
Securities available for sale, due after one year but within five years, amortized cost
us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
Other liabilities
Due after five years but within ten years, amortized
Local Phone Number
Securities available for sale, due within one year, amortized cost
Entity Address, Postal Zip Code
Preferred Stock [Member]
Agency mortgage-backed securities, fair value
Title of 12(b) Security
Security Exchange Name
Loans originated to finance other real estate owned
Value of loans originated to finance other real estate owned.
Due after five years but within ten years, fair value
Trading Symbol
Securities available for sale, due within one year, fair value
Securities available for sale, due after one year but within five years, fair value
Class of Stock [Axis]
Agency mortgage-backed securities, amortized cost
Available-for-sale debt securities
Debt securities available-for-sale
Class of Financing Receivable [Axis]
Class of Financing Receivable [Domain]
Entity Common Stock, Shares Outstanding
Interest rate after modification
Earnings Per Share [Text Block]
Preferred stock, no par value (in dollars per share)
Hedging Designation [Axis]
Financing Receivable, Credit Quality Indicator [Table]
Change in net unrealized (loss) gains on debt securities
Non-covered loans
Non-covered
Internal Credit Assessment [Axis]
Merger expenses
Business Combination, Acquisition-Related Cost, Expense
us-gaap_FairValueDisclosureOffbalanceSheetRisksFaceAmountLiability
Total off-balance sheet risk
Repurchase of common shares, per share (in dollars per share)
Represents price per share for stock repurchased and retired during period.
Scenario [Axis]
us-gaap_InterestIncomeExpenseAfterProvisionForLoanLoss
Net interest income after provision for credit losses
Scenario [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Domain]
Reclassification out of Accumulated Other Comprehensive Income [Member]
Interest, taxes, and other liabilities
The aggregate amount of interest, taxes and other liabilities.
Weighted average shares outstanding
Reclassification out of Accumulated Other Comprehensive Income [Axis]
Designated Par Value [Member]
Information pertaining to preferred stock with a designated par value.
Derivative Instruments, Gain (Loss) [Table Text Block]
Undesignated Par Value [Member]
Information pertaining to preferred stock with an undesignated par value.
Investments Classified by Contractual Maturity Date [Table Text Block]
Interest on deposits in banks
Internal Credit Assessment [Domain]
Common stock, par value (in dollars per share)
Common Stock, Par or Stated Value Per Share (in dollars per share)
Interest on securities -- taxable
us-gaap_BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
Fair Value of Company common stock issued
Interest on securities -- tax-exempt
Accounting Standards Update [Axis]
Reclassification out of Accumulated Other Comprehensive Income [Table Text Block]
Derivative Contract [Domain]
Receivable [Domain]
Cash and due from banks
us-gaap_OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax
Reclassification adjustment for gains recognized in net income
us-gaap_CashCashEquivalentsAndFederalFundsSold
Total cash and cash equivalents
us-gaap_Assets
Total assets
Designated as Hedging Instrument [Member]
Interest and fees on loans
Reclassification adjustment for amortization of prior service cost and net actuarial loss recognized in net income
Disposal Groups, Including Discontinued Operations, Disclosure [Text Block]
Loans modified
Percentage of total financing receivable
Amortized cost basis
Diluted (in dollars per share)
Diluted earnings per common share (in dollars per share)
fcbc_AccretionOnAcquiredLoans
Non-cash accretion on acquired loans
Amount of accretion on acquired loans.
us-gaap_PaymentsToAcquireBusinessesGross
Cash paid for fractional shares
Other real estate owned
Schedule of Derivative Instruments [Table Text Block]
Asset Class [Domain]
Extended term (Year)
Accounts and Financing Receivables [Table]
Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]
us-gaap_FinitelivedIntangibleAssetsAcquired1
Intangible Asset, Finite-Lived, Acquired
Consolidation, Policy [Policy Text Block]
Interest Receivable
Receivable Type [Axis]
Cash paid for interest
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeposits
Total deposits
Amount of deposits assumed at the acquisition date.
us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLossStatementOfFinancialPositionExtensibleList
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]
Interest Rate Swap [Member]
fcbc_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssetsIncludingGoodwill
Total assets
Amount of assets including goodwill acquired at the acquisition date.
Gain on sale of equity investment
Net gain on sale of equity investment
Business Combination [Table Text Block]
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff
Disposal Groups, Including Discontinued Operations [Table]
fcbc_PercentageOfCombinedDepreciationOfCombinedReportedValueOfAggregateSecuritiesPortfolio
Percentage of Combined Depreciation of Combined Reported Value of Aggregate Securities Portfolio
Represents the percentage of combined depreciation of combined reported value of aggregate securities portfolio.
Financing Receivable, Revolving, Writeoff
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff
Mortgage-backed Agency Securities [Member]
Information pertaining to mortgage-backed agency securities.
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff
Securities sold under agreements to repurchase
Securities sold under agreements to repurchase
Deposit Liabilities, Type [Table Text Block]
us-gaap_StockholdersEquity
Total stockholders' equity
Balance
Balance
us-gaap_FinancingReceivableAccruedInterestAfterAllowanceForCreditLoss
Financing Receivable, Accrued Interest, after Allowance for Credit Loss
us-gaap_PaymentsOfDividendsCommonStock
Payments of common and special dividends
us-gaap_DebtSecuritiesAvailableForSaleAccruedInterestAfterAllowanceForCreditLoss
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss
ecd_Rule10b51ArrTrmntdFlag
Rule 10b5-1 Arrangement Terminated [Flag]
ecd_Rule10b51ArrAdoptedFlag
Rule 10b5-1 Arrangement Adopted [Flag]
Noninterest income
us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Fiduciary and Trust [Member]